Sentence examples for quite difficult to verify from inspiring English sources

But we notice that the condition (H) used in [19, 20] is a mixed condition involving integrability condition and supremum and limit condition, and is quite difficult to verify.

Such models can become quite complex and are difficult to verify based just on the usual experimental responses of conversion, number and weight average molecular weights, and effluent temperature.

As ever it's difficult to verify the date.

It was difficult to verify whether this really was happening.

It was difficult to verify the number of casualties independently.

The precise fate of the manuscripts was difficult to verify.

Moreover, Americans' claims to Cuban assets, while potentially legitimate, are exceedingly difficult to verify.

"To what extent this is impacted by SARS is pretty difficult to verify".

The numbers reported by either side were difficult to verify.

The ABC said the two stories were "difficult to verify" but "strikingly similar".

While that statistic is difficult to verify, the book is indeed ubiquitous in Seoul.